Yes - when you're installing another title, click "OK to overwrite AirScapes.scr?" and "OK to Create Directory?" The new photos will be installed in the same folder (C:\Program Files\AirScapes) as the original - all images (old and new) will be displayed.

If you prefer to keep the screen saver images separate, you can install the new ones in a different folder. On the first installation screen, type in (add) a new folder name, for example: C:\Program Files\AirScapes\Nova Scotia. You can then select the different folders through Settings / Images / Add Directory, etc.